White Papers
Table Of Contents
- 1 Introduction to member RAID policies
- 2 RAID policy availability and performance comparisons
- 3 Setting the member RAID policy
- 4 Displaying the RAID level space distribution
- 5 PS Series array disk layout
- 6 Converting or migrating from a member RAID policy
- 7 Summary
- A 12-Disk PS Series array RAID configurations
- B 14-Disk PS Series array RAID configurations
- C 16-Disk PS Series array RAID configurations
- D 48-Disk PS Series array RAID configurations
- E 42 or 84-disk PS Series RAID configurations
- F Technical support and resources
27 Dell PS Series Storage: Choosing a Member RAID Policy | TR1020 | v 4.7
B 14-Disk PS Series array RAID configurations
The following table shows the blade version of the PS Series arrays.
PS-M4100 and PS-M4110 14-disk RAID Set Relationship
RAID Policy
Spare Disks
RAID Set Relationship
Best Practice
RAID 6
1 Spare Disk
(11+2)
Yes
RAID 6
Accelerated
1 Spare HDD
(6+2 HDD) (6+2 SSD)
N/A
RAID 10
2 Spare
Disks
(6+6)
No for HDD or SSD
greater than 6 TB.
RAID 50
2 Spare
Disks
(5+1)(5+1)
For selected
configurations
1
RAID 5
1 Spare Disk
(12+1)
Not for business
critical data
1
RAID 50 is not recommended for arrays with 1 TB or larger disks. The Dell Group Management GUI will not
allow for any members with 3 TB or higher to be configured with RAID 50 (firmware 7.0.0 and higher)